2000 Hook-up Book

Friction Loss for Water in Feet per 100 ft. Schedule 40 Steel Pipe

Table 35: Friction Loss* for Water in Feet per 100 ft. Schedule 40 Steel Pipe

U.S.

Velocity Ft/Sec. 3" PIPE

hf

U.S.

Velocity Ft/Sec. 3/8" PIPE

hf

U.S.

Velocity Ft/Sec.

hf

SYSTEM DESIGN

Gal/Min.

Friction

Gal/Min.

Friction

Gal/Min.

Friction

1-1/4" PIPE

50 60 70 80 90

2.17 2.60 3.04 3.47 3.91 4.34 5.21 6.08 6.94 7.81 8.68 9.55

.762

1.4 1.6 1.8 2.0 2.5 3.0 3.5 4.0 5.0

2.35 2.68 3.02 3.36 4.20 5.04 5.88 6.72 8.40

9.03

12 14 16 18 20 22 24 26 28 30 35 40 45 50 55 60 65 70 75 16 18 20 22 24 26 28 30 35 40 45 50 55 60 65 70 75 80 85 90 95 25 30 35 40 45 50 60 70 80 90

2.57 3.00 3.43 3.86 4.29 4.72 5.15 5.58 6.01 6.44 7.51 8.58 9.65

2.85 3.77 4.83 6.00 7.30 8.72

1.06 1.40 1.81 2.26 2.75 3.88 5.19 6.68 8.38

11.6 14.3 17.3 26.0 36.0 49.0 63.2 96.1

100 120 140 160 180 200 220 240 260 280 300 350 100 120 140 160 180 200 220 240 260 280 300 350 400 450 500 550 600 160 180 200 220 240 260 300 350 400 450 500 600 700 800 900 220 240 260 300 350 400 450 500 600 700 800 900

10.27 11.94 13.7 15.6 21.9 27.1 33.8 41.4 49.7 58.6 68.6 79.2 90.6

6 7 8 9

10.08

136 182 236 297 364

10.2 12.3 14.5 16.9 19.5 22.1

11.8 13.4 15.1 16.8

10.4 11.3 12.2 13.0 15.2

10

10.7 11.8 12.9 13.9 15.0 16.1

1/2" PIPE

2

2.11 2.64 3.17 3.70 4.22 5.28 6.34 7.39 8.45 9.50

5.50 8.24

30

2.5

4" PIPE

3

11.5 15.3 19.7 29.7 42.0 56.0 72.1 90.1

2.52 3.02 3.53 4.03 4.54 5.04 5.54 6.05 6.55 7.06 7.56 8.82

.718

3.5 4.0

1.01 1.35 1.71 2.14 2.61 3.13 3.70 4.30 4.95 5.63 7.54 9.75

1-1/2" PIPE

5 6 7 8 9

2.52 2.84 3.15 3.47 3.78 4.10 4.41 4.73 5.51 6.30 7.04 7.88 8.67 9.46

2.26 2.79 3.38 4.05 4.76 5.54 6.34 7.20 9.63

10 12 14 16

10.56 12.7 14.8 16.9

110.6

156 211 270

12.41 15.49 18.9 22.7 26.7 31.2 36.0 41.2 46.6 52.4 58.7 65.0 71.6

3/4" PIPE

10.10

4.0

2.41 3.01 3.61 4.21 4.81 5.42 6.02 7.22 8.42 9.63

4.85 7.27

11.4 12.6 13.9 15.1

12.3 14.4 18.1 21.4

5 6 7 8 9

10.2 13.6 17.3 21.6 26.5 37.5 50.0 64.8 80.9 99.0

10.24 11.03

5" PIPE

11.8 12.6 13.4 14.2 15.0 15.8

2.57 2.89 3.21 3.53 3.85 4.17 4.81 5.61 6.41 7.22 8.02 9.62 2.44 2.66 2.89 3.33 3.89 4.44 5.00 5.55 6.66 7.77 8.88 9.99

.557 .698 .847

10 12 14 16 18 20 22 24 26 28 10 12 14 16 18 20 22 24 26 28 30 35 40 45 50 6 8

1.01 1.19 1.38 1.82 2.43 3.13 3.92 4.79 6.77 9.13

10.8 12.0 13.2 14.4 15.6 16.8

100

2" PIPE

120 141 165 189

2.39 2.87 3.35 3.82 4.30 4.78 5.74 6.69 7.65 8.60 9.56 2.35 2.68 3.02 3.35 4.02 4.69 5.36 6.03 6.70 8.04 9.38

1.48 2.10 2.79 3.57 4.40 5.37 7.58

1" PIPE

2.23 2.97 3.71 4.45 5.20 5.94 6.68 7.42 8.17 8.91 9.65

3.16 5.20 7.90

11.2 12.8 14.4 16.0

11.8 14.8 18.2

10.2 13.1 16.3 20.0 28.5 38.2 49.5

11.1 14.7 19.0 23.7 28.9 34.8 41.0 47.8 55.1 62.9 84.4

1000

6" PIPE

100 120 140 160

.411 .482 .560 .733 .980

11.5 13.4 15.3

2-1/2" PIPE

1.25 1.56 1.91 2.69 3.60 4.64 5.81 7.10 8.52

10.39

35 40 45 50 60 70 80 90

1.15 1.47 1.84 2.23 3.13 4.18 5.36 6.69 8.18

11.1 13.0 14.8 16.7 18.6

109 137 168

1000 1100 1200 1300 1400

11.1 12.2 13.3 14.4 15.5

* Aging Factor Included

100 120 140 160 180 200 220 240

10.1 11.7 13.6

11.5 15.5 20.0 25.2 30.7 37.1 43.8

10.7 12.1 13.4 14.7 16.1

77